{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:ISEO4R7SJHUAQ2YCOMNAPOSITW","short_pith_number":"pith:ISEO4R7S","schema_version":"1.0","canonical_sha256":"4488ee47f249e8086b02731a07ba489d92b0b8f1caafe5521001b1386170de0f","source":{"kind":"arxiv","id":"1608.01998","version":2},"attestation_state":"computed","paper":{"title":"Type Ibn Supernovae Show Photometric Homogeneity and Spectral Diversity at Maximum Light","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"Alessandra Corsi, Alexei V. Filippenko, Andrea Pastorello, Assaf Horesh, Avishay Gal-Yam, Christoffer Fremling, Cosimo Inserra, Curtis McCully, D. Andrew Howell, David Sand, Emir Karamehmetoglu, Eran Ofek, Francesco Taddia, Frank Masci, G. H. Marion, Gina Duggan, Griffin Hosseinzadeh, Iair Arcavi, Jason Surace, Jesper Sollerman, Joel Johansson, Kelsey Clubb, Ken W. Smith, Mansi Kasliwal, Mark Sullivan, Morgan Fraser, Nancy Elias-Rosa, Ori D. Fox, Przemek Wo\\'zniak, Russ Laher, S. Bradley Cenko, Stefano Benetti, Stefano Valenti, Stephen Smartt, Umaa Rebbapragada, Weikang Zheng, Yi Cao","submitted_at":"2016-08-05T20:00:03Z","abstract_excerpt":"Type Ibn supernovae (SNe) are a small yet intriguing class of explosions whose spectra are characterized by low-velocity helium emission lines with little to no evidence for hydrogen. The prevailing theory has been that these are the core-collapse explosions of very massive stars embedded in helium-rich circumstellar material (CSM). We report optical observations of six new SNe Ibn: PTF11rfh, PTF12ldy, iPTF14aki, iPTF15ul, SN 2015G, and iPTF15akq. This brings the sample size of such objects in the literature to 22. We also report new data, including a near-infrared spectrum, on the Type Ibn SN"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1608.01998","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-08-05T20:00:03Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"cfaf9e790f547875d2e1c7f9fd2f140d19597176a9c792998a6c9d4681480b2d","abstract_canon_sha256":"db52dfe50db83eccb5644a5b68075876b6226034010fc3ae0d8c1356fe81b618"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:55:43.397822Z","signature_b64":"bn6O4Cz84d67b+mkBMLlLEDtYdKcSKBcAvOUXKNeoVZ/yePeoowhqZPexgNF7Cx/VZ9JwveZUvhScyx9gxxUAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4488ee47f249e8086b02731a07ba489d92b0b8f1caafe5521001b1386170de0f","last_reissued_at":"2026-05-17T23:55:43.397155Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:55:43.397155Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Type Ibn Supernovae Show Photometric Homogeneity and Spectral Diversity at Maximum Light","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"Alessandra Corsi, Alexei V. Filippenko, Andrea Pastorello, Assaf Horesh, Avishay Gal-Yam, Christoffer Fremling, Cosimo Inserra, Curtis McCully, D. Andrew Howell, David Sand, Emir Karamehmetoglu, Eran Ofek, Francesco Taddia, Frank Masci, G. H. Marion, Gina Duggan, Griffin Hosseinzadeh, Iair Arcavi, Jason Surace, Jesper Sollerman, Joel Johansson, Kelsey Clubb, Ken W. Smith, Mansi Kasliwal, Mark Sullivan, Morgan Fraser, Nancy Elias-Rosa, Ori D. Fox, Przemek Wo\\'zniak, Russ Laher, S. Bradley Cenko, Stefano Benetti, Stefano Valenti, Stephen Smartt, Umaa Rebbapragada, Weikang Zheng, Yi Cao","submitted_at":"2016-08-05T20:00:03Z","abstract_excerpt":"Type Ibn supernovae (SNe) are a small yet intriguing class of explosions whose spectra are characterized by low-velocity helium emission lines with little to no evidence for hydrogen. The prevailing theory has been that these are the core-collapse explosions of very massive stars embedded in helium-rich circumstellar material (CSM). We report optical observations of six new SNe Ibn: PTF11rfh, PTF12ldy, iPTF14aki, iPTF15ul, SN 2015G, and iPTF15akq. This brings the sample size of such objects in the literature to 22. We also report new data, including a near-infrared spectrum, on the Type Ibn SN"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.01998","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1608.01998","created_at":"2026-05-17T23:55:43.397256+00:00"},{"alias_kind":"arxiv_version","alias_value":"1608.01998v2","created_at":"2026-05-17T23:55:43.397256+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.01998","created_at":"2026-05-17T23:55:43.397256+00:00"},{"alias_kind":"pith_short_12","alias_value":"ISEO4R7SJHUA","created_at":"2026-05-18T12:30:22.444734+00:00"},{"alias_kind":"pith_short_16","alias_value":"ISEO4R7SJHUAQ2YC","created_at":"2026-05-18T12:30:22.444734+00:00"},{"alias_kind":"pith_short_8","alias_value":"ISEO4R7S","created_at":"2026-05-18T12:30:22.444734+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2606.00208","citing_title":"JWST Reveals Large Reservoirs of Dust and Ongoing Circumstellar Interaction in SN Ibn/Icn 2023xgo over a Year Post-Explosion","ref_index":173,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/ISEO4R7SJHUAQ2YCOMNAPOSITW","json":"https://pith.science/pith/ISEO4R7SJHUAQ2YCOMNAPOSITW.json","graph_json":"https://pith.science/api/pith-number/ISEO4R7SJHUAQ2YCOMNAPOSITW/graph.json","events_json":"https://pith.science/api/pith-number/ISEO4R7SJHUAQ2YCOMNAPOSITW/events.json","paper":"https://pith.science/paper/ISEO4R7S"},"agent_actions":{"view_html":"https://pith.science/pith/ISEO4R7SJHUAQ2YCOMNAPOSITW","download_json":"https://pith.science/pith/ISEO4R7SJHUAQ2YCOMNAPOSITW.json","view_paper":"https://pith.science/paper/ISEO4R7S","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1608.01998&json=true","fetch_graph":"https://pith.science/api/pith-number/ISEO4R7SJHUAQ2YCOMNAPOSITW/graph.json","fetch_events":"https://pith.science/api/pith-number/ISEO4R7SJHUAQ2YCOMNAPOSITW/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ISEO4R7SJHUAQ2YCOMNAPOSITW/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ISEO4R7SJHUAQ2YCOMNAPOSITW/action/storage_attestation","attest_author":"https://pith.science/pith/ISEO4R7SJHUAQ2YCOMNAPOSITW/action/author_attestation","sign_citation":"https://pith.science/pith/ISEO4R7SJHUAQ2YCOMNAPOSITW/action/citation_signature","submit_replication":"https://pith.science/pith/ISEO4R7SJHUAQ2YCOMNAPOSITW/action/replication_record"}},"created_at":"2026-05-17T23:55:43.397256+00:00","updated_at":"2026-05-17T23:55:43.397256+00:00"}